[PyQt] Custom widgets usable from designer

[Martin Höfling]

Hi all, 

is there a tutorial or sth which describes how to implement a custom widget to 
make it usable from designer? 

I wanna implement a simple widget consisting of a label a LineEdit (with full 
path of file) and a Button to select a file. The Button and the Line Edit 
should be synced and after Edit, the LineEdit must contain a valid/existent 
file. 
I need this  x times (x>10), so implementing this as a widget usable from 
designer would be great.

Best wishes
	Martin